Warp stop-motion for looms.



PATENTED JULY 23, 1907. J. K.LANNING.

WARP STOPMOTION FOR LOOMS.

APPLIO'ATION FILED F EB.12,1907.

witnesses ad gm fizvenw Javws [La/away M42211) 1?,

PATENTED JULY23, 1907;

J, K. LANNING. WARP STOP MOTION FOR LOOMS.

APPLICATION FILED FEB. 12, 1907.

' 3 SHEETS-SHEET 3 fnvefltvri, Jar/666 K la/z may witnesses UNITED STATES PATENT OFFICE.

m nts 1c. mum e or BOSIITON, MASSACHUSETTS.

wimp jS'IOP-MOTION FOR LOOMS.

To all whom it may concern:

Be it known that I, JAMES K. LANNING, a citizen of the United'Statcs, residing at Boston, in the county of Suiiolk, State of Massachusetts, have invented an Improvement in Warp Stop-Motions for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to looms, being more particularly concerned with but not limited to the provision of improvements to be used in connection with electrical warp stop motions.

My invention .will be best understood by referen e.

to theiollowing description when taken in connection with -the accompanying illustration of one specific embodiment thereof, while its scope will be-more particularly pointed out in the appended claims.

In the drawings :Figure 1 shows in side elevation a'loom frame with attachments applied thereto embodying one form of my invention; Fig. '2 shows in plan a lease rod bracket embodying one form of my invention; Fig. 3 is a side elevation of such form ol bracket; Fig. a is an end elevation thereof; Fig. 5 is 2. plan oi.a modified form of bracket embodying my of such belt shifting device.

invention; Fig. 6 is a side elevation of such mod ilicd form of bracket; Fig. 7 is an end elevation of such modified form of bracket; Fig. 8 is a side elevation oi still another form of bracket embodying ny invention; Fig. 9 is a view partly in end-elevation and partly in vertical section'of such modified form oi bracket; Fig. 10 is a central sectional view oi the portion of .the loom supporting the lease rod bracket, and Fig. 11 is a transverse sectional view-oi the same.

In the drawings, I have shown my invention as applied to a particular construction-oi loom and a.

particular type of warp stop motion, but it is to be understood that such sideirame-member l of a loom provided with a wellknown construction oi belt shifting device, which is thrown into operation through the action of the drop bars of the warp stop motion in a manner well understood to those skilled in the art, it being unnecessary to describe in detail the construction and operation In the present instance, have shown the loom as provided with circuiting devices fer the warp stop motion of the same general construction as is described in Patent, No. 690,636 to Coldwell d: Gildard. To the side frame members 1 are adj ustably bolted the upright angle brackets 2 (Fig. 1) which sustain various contact devices for the Patented July 23, 1907.

warp stop motion. These comprise primarily the single tubular contact bar 3, supported at its ends by the Wooden plugs 4, the latter secured to inwardly projecting lugs upon the angle brackets 2. Connection is had between the tubular contact bar 3 and one side of the circuit, leading to the controlling magnet by means of the spiral coil 5 of conducting wire, which connects with the lead wire 6 passing through the adjacent wooden plug 4 and the insulating tube 7 to the controlling 'niagnet 36. The other side oi the circuit, as willbe Well understood by those well skilled in the art, is connected through. the frame of the machine to the pair of overhead circuit and guiding rods 8, which are shown as converging toward their upper edges and secured at their opposite endsto lugs projecting inwardly from the bracket 2.

1n the present type of my invention, supported and engaging at their ends with inturned studs sustained by said brackets are the tubular lease rods 10 and 11, which maintain the tlneads oi thewarp ina leased condition with successive threads crossed in a fashion well understood to. those well skilled in the art.

Upon successive warp-threads are-suspended the drop bars, 1.he latter arranged in two sets, the drop in the bracket 2, which apertures, however, are closed after the rods are placed in position by the overlying walls of the lease rod brackets 9.

The drop bars or detectors are maintained in accurate contact with the contact rods 8 under all conditions oi use. A break in one of the warp threads causes the drop bar supported thereby to fall and contact with ing the electro-inagnet controlling the device or the immediate stoppage of the loom.

and 11 however mounted with relation to each other, should so control the position of the threads that the desirable relation between the drop bars and the cooperating contact device should be maintained without displacement, otherwise vibratory movement of the lay may cause dis-arrangement oi the drop bars rela'- tively to the contact rods. It. has been found, however, that rigidly and fixedly holding the lease rods is above the contact rods 8 upon the lease rod bracket 9 bar 2 of one set being sustained by one series of threads and having their open depending legs embracing onefunds of the said retaining rods pass through apertures I the contact bar 3, completing the circuit and energiz- It is quite desirable that the leasing members 10 apt to put increasing frictional resistance upon the warp threads particularly if the attendant is careless in adjusting the warp or the harness.

In the type of stop motion herein disclosed, the leasing members 10 and 11 serve not only the usual func tion, common in looms, of separating the warp threads in such manner that the warp feedseasily, and theof supporting the warp against the weight of the drop bars. Moreover, when the special form of drop bar here shown is used, the advantages incident thereto are obtained. By providing a construction 311d arrangement whereby the guiding means for the rep bars and the devices intended to cooperate with the drop bars in their ind cating movement to stop the loom, are'held in fixed relation so as not to partake of the movements of the leasing members, and preferably are rigidly connected to the loom frame, while the" warp supporting H lease rods (not only separating the warp but supporting the same against the weight of the drop bars as above noted) are given a certain freedom of movement of any suitable character, with the movement preferably so confined as not to materially move the drop bars length- Wise of the warp, not only is more freedom given to the warp in its travel by the lease rods and throughthe drop bars, but greater certainty of stopping action of the stopping mechanism is obtained. A warp thread having broken, the drop bar falls and is guided by a stationary guide bar into contact or engagement with the lower co-acting deviceentirely free from any further movement that may be imparted to thewarp supporting lease rods. Not only,so, but the slight rocking or oscillatory movement of thelease rod or rods and the supported threads and drop 'bars tends, if anything, to increase thetendency of the releaised drop bar on the,

broken th -cad to fall; All the advantages, therefore,

bf permanently positioned guiding and stopping'de- I vices are had, together with the advantage of relatively freely moving warp supporting bars and lease rods.

, To avoid theenumerated objections and other disadvantages I preferably construct each. leaserod bracket 9 in two main parts although such other form of support may be employed as is found desirable. As indicated in Figs. 2, 3 and 4 these parts comprise a portion 18 herein shown as clamped to an angle bracket2'and acting as a support for an arm or member 19, preferably pivoted thereto, as by bolts 19, to-r'ock or oscillate in a vertical plane. Othermeans permitting vertical move ment of the portion supporting the leaserods may be employed within the scope of my invention.

If desired, eoilor other springs 20, 21, may be interposcdbctwcen the oscillatory member 19 and the portion 18, as indicated in Fig. 3, to cushion the oscillatory movement of said member 19-. The latter isadapted to support studs 22 which enter and sustain the lease rods. or members 10 and 11. While the said studs 22 may be if desired rigidly secured to or form a portion of the oscillatory member 19, preferably mount them in any sui able manner permitting movement thereof toward and from the fell of the cloth, in order that as the beat up of the lay occurs the lease rods may be movable toward the fell of the cloth. This effect maybe obtained 'in the manner indicated in Figs. 2, 3 and 4, wherein blocks 23 are mounted upon the oscillatory or vertically movable member 19 and have formed therewith the studs 22 extending through an open or slotted por-' 1 tion 24 of said member to permit the longitudinal movement of said studs and lease rods mounted thereon.

I have shown cushioning members 25, herein repre- I l I sented as coll springs interposed in the path of move-.

\ mentofsaid lease rods toward the fell of the cloth, th ere by to afford a yielding support for said blocks, but I have found it to be sufficient to provide a cushioning member for merely the forward lease rod. It will be ob served that in the form of the invention disclosed in Figs. 2, 3 and 4, the lease rods are mountedfor move-, ment independently of-each other in addition to their common swinging movement. Warp supporting lease rods when mounted for independentmovement when combined with guiding means for indicating drop bars and means c'oijperating'with theloom stopping means possess the advantages more fully hereinafter set forth. In Figs. 5,v 6 and 7 is shown a modified arrangement wherein upon the bracket 18 is mounted an oscillatory I member 26, which receives a bridge portion 27 seated upon the upper face of the oscillatory memberand hav- .ingdcpending portions 2Q, 28, extending intolongitudinally disposed slots in said member and having formed therein studs 22, 22, extending forwardly through openings 251', 29, in said member to receive the lease rods 10 and 11. If desired, a cushioning membensuiih for example as coil spring 30, may be interposed in the path of movement of the bridge portion toward thefellof the cloth. In this modified. arrangement, it will be ob' served that the studs 22, 22 are rigidly'united to move in unison. In Figs. 8 9 is shown still another mlidiv fiedarrangement wherein upon the bracket 18 is piyoted by bolt 31 an oscillatory member 32 having studs 22 ,ex'

tending forwardly therefrom. The bolt 31 is carried by a laterally sliding block '33 attached to or formed "upon one face-of the oscillatory member 32,'s'aid block being mounted forgsuch movement in elongated ways 34 inthe oscillatory member. If desired, a coil spring or other cushioning member 35 maybe interposed bei tween one edge of the block and-an adjacent portion ofthe oscillatory member to cushion the movement of the no] blockand hence of the oscillatory member'ftoward the fell of the cloth! While in these forms of the invention the portion or member mounted upon the bracket 18 is indicated as pivoted thereon, I am not to berestricted "save as expressly statedto such manner of attachment.

In Fig. 1 is indicated an oscillatory member 36 mounted upon the bracket 18. p In this form of the invention the'le'ase rods carried by the-member 36 are not shown as having a movement toward-and from the tell of the cloth as in those other forms 'of the invention that are herein illustrated. Provision for such movement may or may not be made in such type of the invention. While I have-shown several modified forms of my invention I'desire itto be distinctly understood that my invention may be embodied in many other constructions and arrangements and that I am in'no wise tobe limited to merely those forms that I have shown. v

The provision of a yieldable oscillatory support, the pivotal. point whereof is preferablylocated in or about the designed line of thread crossings, as represented in movement :ibou t Fig. 11, permits the lease rods to tip above or below the normal position shown in Fig. 1'], and therefore permits the rods to aline with the natural. travel o the warp, without, however, sup 'iiyiug any material tnudem-y toward the displacement; of the drop bars The latter are sustained so close to the center ol oseillat ion that it quite extensive tipping movement of the lease rods causes little or no movement of the drop in rs.

In the practice of my invention, l have found that the disclosed support for the lease rods is of marked udviintage ill lGtltl llllg the friction upon the warp as o'ri denced by thegreat reduction in the amount oi 1 int slit-d.

' By yicldingly sup 'iorting the lease rods the vihruioi-y effect of the lay uIion the Warp is less illit 'to i-l'l'i-et' the warp threads and the drop ilttl'S.

As shown in the drawings each bracket portion ll may be provided with the upright head 36, to whi -h mu be fastened the guard strip or hand of elnst ic or other limitrial, represented by dotted line at 37. This guard st ii p .is set; forth in prior patent No. 7 7,856 to toldwrli it: Giidard, may he used in substituting for the retaining rods 16 and 17.

While I havo shown and described one form of my invention and as applied to a particular l'orni ot' stop motion, it is to he understodd that the same is not. limited either in the detail of constrturtion as disi-losod or form or relative arrangement of parts or to the spo -ilic application which is here made of the same, but that I i t v J extensive moditieations may be made in the illustrated eml'i'odiinent thereof without. (ltqliz'lliillg i'rom the spirit: of the invention.

Claims.

1. in :1 warp stop motion for :1 loom tho (-ornbinai'ioi'i with drop bars and guiding means therefor and eoiiporah t," ircuit osiuhlishing means of w rp supporiini'; h'usu rods between wliieli said drop bars are supportr-d upon the leased threads of the warp and :in osr'illuling" support for said se rods upon which said louse rods may move indupendi ntly oi the guiding nn-uns for said drop bars and oil'- rruit: establishing means.

2. In :i wurp stop motion for :1 loom the combination with drop bars and eoi'uu-rzitiiu, circuit: establishing m ans of warp supporting lease rods between which th v drop bars urn supported upon the leased threads of the warp, and a support for said lease rods having a tippin movement about an uxi substantially r-oinoidont with the line of the thread crossings.

In a warp stop motion for a loom tho uombinution i drop burs and guiding means therefor and (.'(H'i[)('l'$li'- ing circuitmstalblishing moons of warp supporting; lousiiip;

members between which the drop burs are support d"upon the leased threads ol. the warp. said lensing members being; supported tio-purmit movement thereof, whereby thnyjimy alino with the natural travel of the wurp, said support. of the guiding means for the leasing members poi-milling; sin-h movement without: movement oi". the drop burs.

4. In a wiirp stop motion for :1 loointbo' combination with drop Iiii "s and guiding moans .therni'or and cooperating circuit ablishing, means of warp supporting lensing; members and means wlinreon the same are mounh-d to move in conformity with the.reipiiroini'nts of the. warp such moans permitting said movement oi the leasing im unhers without displacement oi the guiding means for the. drop liars.

.5. In a warp stop motion for it loom the combination with circuit rods, drop hars in eoniuul; thorewiih. an llll- (liil'lying contact lillh, warp supporting louse rods between which the drop bars tlll: sustained out'ol' vonlaet. with the Contact bar by the leased throuds of the warp. and :i liriinket sustaining suit! h-asirods mounted for tipping :is subsiiiuri l (f lliidii ili. with tho line of crossed thre; i

i. in a warp stop motion for :1 loom, the enmhinal'ion wilh one or more warp thread supporting lease rods, of one or more series oi drop burs supported on the sheets 01' threads formed by said lease rod or rods, means for supporting llti ll'use rod or rods upon the uniehinu to pnriuit movonu-ut then-oi in eoiir'orniit with the levelingrequirements oi the warp. iixed guiding means to guide the movement of an imheatin drop bar. and fixed means to copt-rate with said indicating: drop bar to stop the lump.

7. In a warp stop nioiion i' .u: a lo m, t e combination with one or more lease rods dividim;- the warp into sheets of one or more series oidrop bars supported on the sheets ofthreads formed by said lease rod or rods, said. rod or rods being, mounted upon the muehine to permit nioveuuuit thereof in ront'ormit i' with the leveling requirements oi the wurp. ll'tlltiill}: means to guide the movement of an indicatin: bar, and means to cooperate with said indicating drop bar to stop the loom, said guiding mouns and said eoi'iperuting means being supported to permit movement. of the leasirod or rods imlepeuih-nily ol. said guiding means and silid (-oi'u ierut lug n'ieuus.

in r. \\'2il'1l stop motion for u loom, tilt! eomhinution with 4: plurality of lease rods dividing the warp into sheets. a plurality ol' sri ot' drop liars supported it) the warp threads wher so separated in 'sheels .,;;uidin;r nu to guide the loom stopping niovouuent; oi the drop lirirs, ill! means t'tl ijltl'lliillll. with the loom stopping morinini. n and will] whit-h un indicating drop bar is adapted to i-ooperuto, suid guiding means and said inruns cooperating with the loom stopping iiioi-luuiism heim; supported to porniit, moronieni' oi the lease rods independently tliei'eiil'.

!l'. in u warp stop motion for it loom. the combination with a plurality of moruhlo l 2 rods dividing the warp into sheets. a plurulit ol st. oi drop liars supported by the warp tl'irouds where so separated in shouts. guiding: means to guide. tho loom stopping movement of the drop liarsv and means ('Uilpti'fltillg with the loom stopping mechani m and with which an indi iiting drop bar is adapted to Cut iorute, said guiding means and said moans cooperating with tho loom stopping lllttllillliSlll being supported upon the loom i'r'aine.

i l. In u warp stop motion for a. loom, the combination with it plurality of morahlo warp thread sup iorting lease rods dividing i'ilt wurp iulo sheets, :1 plurality oil series of drop burs su'ppoi-li-d h lhe warp threads where so separu led into she ts. guiding moans to guide the loom stopping ill fl' llll'lli. oi the drop liars. and means cooperating with the loom siop LI uu-elninisu'i undwitli which an indie. tin; drop bur is udupli-d to eoiipurute, said t'iiidiii; means and said lllt'illlfi roiiperutiuy; with the loom stop muehanism being siu'iportoil to permit: compensating movoment of the tense: rods imlopeudontly izhoreol'.

ll. in u. wurp stop motion for :i loom, the combination with a plurality ot 'niovubln warp thread supporting louse rods dividing the warp into sheets, one or more series of drop burs supported upon said sheets of warp between the lease rods, guiding,- iiiiuns to guide the loom stoppii movement oi the drop h: and menus roiiperiiting with the loom stopping mechanism and with which an indicating drop bar is adapted to (:or'iporuto, said guiding meanshnd Huh! moans room-rating with Lilttdfmill stop mechanism heii supported to permit adjusting movement. or the lease rods iiul -p -iidi-ntly l'hurnol.

1;. [n u warp stop motion for a loom, the combination with a. plurality otf movable warp thread supporting louse rodsdii'idin the warp into slit. u. plurality of series of drop liars,- the series biting i'osper .lv supported upon the .respw-l ire sheets of the warp between said lease rods, guiding menus to guide the loom stop' iing movement. ol the drop bars. and menus eoiiperuting" with the loom stopping iu;, iiiovemonts ol the warp, a plurality of series ot'v drop bars supported by the warp threads where so separated into shoots, guidingmeans to guide the loom stopping movement of the drop bars, and menu's cooperating with the loom stopping mechanism and with which an indicating, drop bur is adapted to cooperate, said icuse rods being independently supported to permit their warp caused swinging movement independently of the said guiding means and means cooperating with the loom stopping lilLt'lltlLllSlIl.

1-1v in a warp stop motion for u loom, the combination of a plurality of leasing members dividing the warp into sheets and mounted for movement in conformity both with the leveling requirements of the warp and toward the fell of the cloth. one or more series of drop bsrs supported by the warp threads where so separated into sheets,- guiding means to guide the loom stopping movement of the drop bars. and means cooperating with the loom stopping mechiii sin and with which an indicating drop bar is adapted to (oii perute said leasing rods being supported so as to permit their warp caused movement independently of any movement of the said guiding devices and said means cooperatim: with the loom stopping mechanism.

15. in a warp stop motion for a loom. the combination with a plurality of warp thread supporting lease rods mounted for independent warp caused movement, of one or more series of drop bars supported on the sheets of the threads formed by said lease rod or rods, guiding means to guide the movement of an indicating drop vour, and means to cooperate with said indicating drop bar to stop the loom, suid guiding means and said cooperating menus being supported independently of said lease rods.

16. In a warp stop motion for a loom, the combination with a plurality of lease rods mounted for independent warp caused movement and dividing the warp into sheets, a plurality of series of drop bars respectively supported upon the respective related series 01' sheets, and between said lease rods. guiding means to guide the movement of an indicating bar, and means to ('oilporatc with said indieating drop bar to stop the loom, said guiding means and said cooperating means being supported to permit the tlest'ribed movements of said lease rods independently of said guiding means and said cuiiperating means.

17. in a warp stop motion for a loom the combination with one or more lease rods dividing; the warp into sheets of one or more series of drop burs supported on the sheets of Threads formed by said lease rod or rods, said rod or rods being mounted upon the machine to permit move mrut thereof in conformity with the leveling requirements operating means.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES K. LANNING Witnesses THOMAS B. BooTH.

of the warp, cushioning meaus'for such movement guid- 

